Issue using Addwatermarkfromtext with copyright symbol in cText

I have run into a problem when using the addwatermarkfromtext.

I have used the method many times, but now I have been asked to add stamp with a copyright statement with "©" symbol in the cText field. When testing from the Javascript console it works perfectly, but when I save it as a .js file and run it as a folder level script (script at bottom) I get: Copyright thisCompany Â©

The issue is the added character "Â"

I have tried changing fonts a few times but I get the same issue. Searching for people with this issue but I have found no solution. 

Hopefully someone here can bestow some wisdom upon me.

this.addWatermarkFromText({
cText: 'Copyright thisCompany © ',

nStart: i,
nEnd: i,
nTextAlign: app.constants.align.left,
nVertAlign: app.constants.align.bottom,
nHorizAlign: app.constants.align.center,
nVertValue: -0.55,
cFont: "KozGoPr6N-Medium",
nFontSize: 30,
aColor: color.black,
Opacity: 1,
nScale: -0.75
});